SATEL K-1 Surface-Mounted Magnetic Contact Sensor, White, NC, 20 mm Gap, 1 m Cable

Unprotected doors, windows, and gates leave properties vulnerable to unauthorized entry. The SATEL K-1 magnetic contact sensor closes that gap by reliably detecting opening and closing, feeding a normally closed (NC) signal to your alarm control panel. Its surface-mounted design and compact ABS housing make it a discreet yet durable choice for residential or light commercial security installations.

Who is it for

Installers and DIY security enthusiasts who need a dependable, easy-to-fit contact sensor for perimeter protection. Ideal for wooden or metal doors, casement windows, and gates where a wired NC zone is available. The K-1 suits SATEL alarm systems and any panel accepting a standard NC input.

Main features

• Normally closed (NC) reed switch with 2-wire connection for universal panel compatibility.
• Wide operating gap up to 20 mm allows flexible alignment between sensor and magnet.
• Surface-mounted compact housing (33 x 14 x 8 mm magnet unit) fits narrow frames and profiles.
• ABS plastic construction resists impact and wear in everyday use.
• 1 m integral cable simplifies wiring to junction boxes or panel terminals.
• Environmental class II (EN 50130-5) for indoor applications with moderate conditions.

Specifications

• Product type: Magnetic contact sensor
• Mounting type: Surface-mounted
• Contact type: Normally closed (NC)
• Max switching voltage: 20 V DC
• Max switching current: 20 mA
• Max switching power: 1 W
• Operating gap: Up to 20 mm
• Cable length: 1 m
• Housing material: ABS plastic
• Colour: White
• Operating temperature: -10°C to +55°C
• Connection type: 2-wire
• Application: Doors, windows, gates
• Environmental class: II (EN 50130-5)
• Dimensions (magnet unit): 33 x 14 x 8 mm

Tips

For best reliability, mount the sensor on the fixed frame and the magnet on the moving leaf, ensuring the gap does not exceed 20 mm when closed. Keep the cable away from sharp edges and high-voltage lines. Test the zone with the panel in walk-test mode after installation to confirm proper triggering.